Free tool

Bench Press 1RM Calculator

Estimate bench press 1RM without max testing. Compare 5 validated formulas and get percentage tables you can use for safer, more precise programming.

How to use this calculator

Enter the load used and the reps completed. The calculator estimates bench press 1RM with 5 validated formulas, averages them, and builds a percentage table you can program from right away.

Best accuracy usually comes from sets of 3-6 reps with solid technique. Estimates above 10 reps are much less reliable.

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